Range



J J. TOOMEY RANGE- FILED JAN. 10, I922.

" Feb. 6, 11923.

- 2 SHEETS-SHEET I Feb. 6, 1923.

J J. TOOMEY.

RANGE. FILED JAN 2 SHEETSSHEET 2 FLA Patented Feb. 6, i923,

JOHN J. TOOMEY, OF CHICAGO, ILLINOIS.

RAN GE.

Application filed January 10, 1922. Serial No. 528,150.

To aZZ whom it may concern:

Be it known that 1, JOHN J. TOOMEY, a citizen of the United States, residing at Chicago, in the county of Cool-r, State of Illinois, having invented certain new and useful Improvements in Ranges, do hereby declare that the following is a full, clear, and eXact description of the same.

My invention relates in general to cooking stoves or ranges such as are used for domestic purposes, and particularly to stoves of this character constructed and arranged for burning both solid and fluid fuels. In ranges of the duplex-fuel type it is customary to locate the fire-box for the coal or other solid fuel at one end of the range at one side of the oven and to pass the heated products of combustion through suitable flue-space leading from the fire-box across the top of the even, then down along its opposite side and then beneath its bottom, and connected to the chimney-flue by a smoke-pipe. The cooking-top for coal-heat is restricted to the top of the fire-box and the upper coal-heated flue-space. In order to afford standard cooking capacity for every day family use the cooking-top in a coal-range requires four coal-heated openings, and in a gas-range four gas burners, and sometimes five as when a simmering burner is desired. In some duplex fuel ranges having separate coal-heated and gas-heated ovens the latter oven is located above the top of the range at the end opposite the fire-box, and the gas-cooking top is sometimes placed over the coal-cooking top and is raised out of the way when the latter is in use, with the result that the heavy gas-burner top must be manually shifted and the two sets of top-cooking units cannot be used simultaneously. In some duplex fuel-ranges either the gas-cooking top is placed at the end of the range opposite the fire-box and beyond the coal-cooking top, or some of the latters customary four coalheated openings are omitted to make room for the standard equipment of gas-cooking burners; in the first case the cooking-top is inconveniently long and the gas-burner top frequently extends beyond the end of the range, and in the second the range does not have a standard coal-cooking top. In another type, illustrated for example by the patent to Coulston No. 1,032,816, dated July 16, 1912, the stove top above the usual topflue for the products of solid-fuel combustlon is provided with two coal-heated openings closed by the usual lids and also with a pair of elliptical openings extending lengthwise of the stove, one on each side of the coal-heated openings, and elliptical casings are located in the top-flue below the elliptical openings to form gas-burner chambers in which gas burners are located in pairs, and these elliptical openings are covered by elliptical plates; as the gas-burner chambers are located in the top-flue these elliptical cover-plates are provided with inlet ports to supply combustion air to the gas-burners and also with cooking-openings above the gas burners closed by removable lids when the burners are not in use, and the elliptical casings are provided at each end with outlet ports for the products of gas combustion leading into the top-flue and controlled by dampers or registers located in these burnerchambers and accessible by removing the lids; the supply pipes for the gas-burners extend out through their casings into the flue space for the coal-combustion products and thence out through a side wall of the stove to gas-valves located at one side thereof, and so the burners cannot be removed for cleaning purposes without taking down the stove construction and disassembling the burner and its pipe, the burner-pipes are subjected to the action of the coal-combustion products passing through the flue space, and the organization requires side-control of the gas-burner valves; also, the gas-burner chambers located in the top flue must be of special form and location in order to avoid eddies and obstructions to the draft through the top-flue, and when the gasburners are used their lids must be removed and the dampers of the outlet ports in the elliptical chambers must be manually opened, and when the gas burners are not used these dampers must be closed and the lids re placed, so that more or less moving and changing of parts is needed to transform the cooking-top from-a solid-fuel burner to a gas-fuel burner or vice versa, and while the solid-fuel may be utilized for culinary purposes or in place thereof the gas burners may be brought into use both forms of heat or fuel cannot be simultaneously used for top-cooking purposes.

The primary objects of my invention are to provide an improved complete duplexfuel cooking-top of standard capacity for each kind of heat or fuel comprising four coal-cooking openings and four separate top-cooking heaters within the area of the fire-box and a standard four-burner top, and in which the two kinds of top-cooking units may be used jointly or separately for top-cooking purposes, and in which no parts of the cooking-top need be moved or shifted when it is desired to change from one fuel to the other for cooking at the cooking-top, and also to provide a stove comprising a complete coal-range of standard capacity and a box-cabinet gas-range having a gasbakiing oven, a gas-broiling oven and standard capacity gas-burner top, and in which all the gas burners are controlled from a gas-manifold at the front of the stove.

Other objects and advantages of the invention will be apparent from the disclosure.

The invention consists in the novel and useful constructions and arrangements of parts herein described and then pointed out in the appended claims.

In the accompanying drawings, which illustrate practical embodiments of the various features of my invention and in which the same reference numerals indicate similar parts in the different figures,

Fig. l is a perspective view of a range equipped with my invention, portions of the coal-section being broken away to expose internal parts;

Fig. 2 is a longitudinal sectional view on the line 22 in Fig. 1;

Fig. 3 is a detail cross-sectional view on the line 3-3 in Fig. 1 showing the intakeend of the top-fine with parts of the wall of the fire-box broken away;

Fig. 4: is a detail cross sectional view on the line H in Fig. 1;

Fig. 5 is a detail top plan view with some parts broken away and the lid of the cross-channel removed;

Fig. 6 is a detail sectional view on the line 66 in Fig. 3, and

Fig. 7 is a view in front elevation of the clean-out piece.

-While for the purposes of illustrating all the features of my invention the range shown is in its general design typical of those having separate solid-fuel and gasheated ovens as above described, it will be understood that my improved cooking-top is applicable to other types of duplex fuel ranges, and it is not necessary to describe in detail the construction of the usual parts of the range shown. In the exemplification shown the coal-section of the range designated in its general parts by the numeral 1 is provided with a fire-box 2 located atone end and at one side of the coal-heated oven 3 and having its top 4. provided with the usual coal-cooking openings closed by the removable lids 5; and the front-plate of the coal-section is a single casting provided with the usual oven and ash-pit doors. A cooking-top plate 6 extends from the fire-box to the other end of the coal-oven and is spaced above the full length and depth of the oven top 7 to form the top-flue space 8 for the hot products of coal-combustion. This fine space communicates at one end with the firebox and at its other end with the downfiue 9 at the side of the oven opposite the fire-box, the products of coal-combustion passing thence through a lower line 10 be neath the oven and into the usual vertical back-flue 11 connected by a pipe tothe chimney. The usual damper 12 is located between the fire-box 2 and its branch 13 of the back-flue so that the necessary straight draft through the fire-box may be provided when starting a solid-fuel fire, this damper being closed from the outside when the fire is brought tothe desired intensity so that its hot products of combustion will then pass through the flue space about the oven.

The top-plate 6 is preferably a single casting and comprises parallel horizontal front and rear shelves 1% and 15, respectively, arranged in the same plane and spaced apart along the length of the oven, longitudinal upright front and rear walls 16 and 17 located at the inner edges of the shelves let and 15 respectively and inclined from bottom to top slightly toward the center of the plate, upright cross-walls 1S and 19, respectively, spaced apart and extending across the space between the intermediate walls 16 and 17 at approximately the center of the latter and downwardly into their upper portions to form a shallow crosschannel, and the bottom 20 of this channel. The shelves let and 15 are suitably spaced above the oven-top 7 to make the flue space S of standard height; in the form shown the shell 14 is provided at its outer edge with a depending flange 21 which is fastened by bolts passing through it and the upturned edge of the oven-top into the upper edge of the front-plate of the coal-stove 1, and the shelf 15 is fastened at its outer edge to a ledge 22 extending above the rear end of the top wall of the oven 3. These shelves are also spaced apart sufficiently so that the space between the upper edges of the walls 16 and 17 at each side of the cross-channel will accommodate a rectangular coal-cooking top-plate 23, and the walls are provided near their upper edges with seating lugs 24 arranged in opposite pairs to which these plates are attached by stove-bolts, each plate having its coal-cooking opening closed by a removable lid The top-flue above the oven thus comprises thelower flue-space 8 under the shelves 14: and 15 of the usual height of the customary top-flue, and the upper flue space provided by the longitudinal conduit or passage formed between the walls 16 and 17, this conduit in practice be ing about five inches deep, eleven inches wide at the bottom and seven inches wide at the top. A removable lid 26 covers the cross-chaiuiel formed in the top of the conduit, and vertical bathe-plates 27 and 28 are mounted at the front ends of the shelves 1 1 and 15, respectively, adjacent the fire-box, and extend across the shelves and upwardly to bring their upper ends flush with the upper edges of the walls 16 and 17, respectively, where they are provided with lateral flanges 29 and 30, respectively, upon which the top-plate 1 of the tire-box is fastened. The battle-plates form upward extensions of the oven-side of the fire-box and have tight joints with the shelves and walls to prevent the products of coal-combustion from passing into the spaces 01' the cooking-top above the shelves. The upper portions of the front ends of the walls 16 and 17 where these battle-plates are located are extended outwardly to provide lips 31 projecting beyond the plates into the fire-box as shown in Fig. and flush with the flanges 29 and to provide seats between the lips and the overhanging edge of the inner plate 23 for the inner edge of the fire-box top 4:; the outer edges of this top and the outer edge of the rear plate 523 are seated on inwardly extending depressed flanges of the top-frame 32 of the cooking-top. The opposite or rear ends of the walls 16 and 17 are provided with horizontal flanges 33 to which the rear closureplate 3 1 of the top-plate 6 is secured. The plate 3 1 extends across the full width of the top-plate and forms the upper wall of the down-fine 9, its upper edge making a tight joint with the frame 32 and its lower edge being secured to vertical flanges 35 on the corresponding ends of the shelves id and 15; the upper end of the outer wall 36 of the down-flue 9 is also secured to these flanges 35 in position to overlap the lower edge of the plate 3 1. The central part or body of the plate 3% spans the rear end of the conduit forming the upper portion of the topflue, and its lateral portions or wings form rear baiiles to close the openings that other wise would lead into the downdiue 9 at the rear ends of the spaces above the shelves 14: and 15. The front shell 14 also has at its rear end a front vertical flange 37 to which is secured the upper end of the vertical portion of the front-plate of the coal-section that forms the front wall of the down-flue 9Q The plate 3% and the ends of the walls 16 and 17 are shouldered as shown in Fig. 2 to accommodate the gas-oven structure 38 which is somewhat wider at its upper roaster-porion than at its lower broiler-portion and is mounted on the stove-fraine at the end opposite the fire-box. The coal-section or" the range is provided at the rear corners of the top-frame 39; with upright brackets, and at its rear with the upright splasher 39 and the top-shell flush with the top of the eve i-casing 38. The rear shelf 15 is extended rearwardly, preferably by a horizontal plate 10 suitably fastened to the frame 1, so that the open spaces at the opposite sides oi the conduit will be substantially equal in width. The front space above the shelf 1 1 is open at its "front to the outside air, and the rear space above the shelf 15 and its extension. 40 is open at its front to the outside air as the bottom of the splasher 39 either terminates at the top-frame 32 or is provided with plu ality perforations it it extends down to the plate 10. These open spaces formed immediately under the top-frame 32 by the shelves 1e and 15 with their end battles and by the vertical walls or" the conduit form front and rear burnerboxes on opposite sides of the conduit that are at all times closed to the products of coal-combustion but are open at their fronts to the outside air, so that burners located therein will always have an unrestricted and ample supply of combustion air, and will be at all times accessible.

In practice I prefer to close the ends of the flue space 8 under the shelves 1d and 5 adjacent the lire-box to pre ent the solid fuel from going into the top-flue; the hot products 01'' combustion from the lire-box will then enter the top-flue through an inlet formed by the opening between the wa ls 16 and 1'? below the front plate For this purpose I extend the lining 01 ;he tire-box at the side adjacent the top-line upwardly and flare its top edge outwardly to overlap the front ends ot the shelves and make a tight joint with lower edges OI the bafiies 2'7 and 28, the front edge of the lining malzi a tight closure with a vertical "b flange 42 on the outer g or" the oaiile 2?. top-tine is iiared lat- As the conduit of the erallv toward bottom it intake end w (is S 6X- tends toward the front and rear ends of the lire-box shown in Fig. 5 to tacilitate the entrance into the top-lirie of a sutlicient volnine of the hot products of coal-combustion to circulate ever the entire ,p ot the oven. and the conduit coucentrz their upper portion at its top where the crnil-coolzir openings of the plates 23 are located. Li] 0. by this arrangement are able to conreniently provide a central clean-out tor the topfiue at its inlet. For this purpose the upper edge of the lining is provided with a lip 13 extending into the inlet between the walls 1% and 17. slightly bore the oventop '7. and a clGnii-0nt piece is secured on lined shirt face extending upwarr t'roin owedtop and making a flush joint with the top of the lip l3; the piece ll provided with the oven-top and has an inc a depressed flange 416 on its outer edge to underlie the lip and close the joint therewith (Fig. 2). This cleanout piece has opposite lateral arms 4-7 and l8 at its lower portion located between the oven-top and the flanges Ll and 15, and upon which supporting lips 1-9 of the lining ll rest, and the arms are provided with upright webs against which these lips abut. The cleanout piece affords a support for the lining and convenient means by which dirt and soot lodged in the top-flue may be brushed or wiped out into the fire-box.

By the organization above described the coal-cooking top is "i -shape in plan, comp 'ising the upper walls of the lire-box and conduit, each of these walls providing ample space for two standard coal-cooking openings as above described so that the coalcooking top affords the standard top-cooking capacity of the commercial coal-range; and the conduit forming the upper portion of the top-flue is disposed longitudinally iu the median line of the cooking-top and leaves ample open space at each of its sides to arrange within the open top the necessary number of additional cooking heaters or units required to give standard top-cool:- ing capacity within the area of the top. While these supplemental cooking units may be of any suitable character, such for example as electric-heaters, I prefer to use gas burners for this purpose.

In practice I arrange these gas burners in tandem pairs in the open burner-boxes on opposite sides of the conduit ofthe topilue. In the front burner-box a giant burner 51 and a regulation burner 52 are arranged in line adjacent and parallel with the front wall ll; of the conduit, and in the rear burner-box a pair of regulation burners 53 is similarly arranged adjacent the rear wall 17 of the conduit. If desired a simiuering burner may be placed in either burner-box. The conduit and burner-boxes arc of sufficient height so that the tops of the burners are slightly below the level of the frame 32 and the top of the conduit, and the parts around the tops of the boxes are provided with inwardly extending depressed flanges 54- to seat the usual removable cool:- iug-top plates that support the cooking vessels, such as the gratings or grids, flush therewith and above the burners; it will be understood that the usual grids are used when artificial gas is employed, and that the usual top-plates are used when natural gas is employed. By the arrangement of parts described in either case the burnerboxes are always open to the outside air, and the circulation of combustion air is facilitated by the cross-channel which provides an air passage between the burner-beams, while the gas cooking-top affords the standard top-cooking capacity of the commercial gas-range. Thesupply pipes 56 and 57 of the front and rear burners respectively communicate with the burner-box manifold 58 to which the gas is supplied, and which is at the front of the cooking-top and is provided with the usual valves 59 to admit the gas to the air and gas mixers of these pipes, the burners being of the usual blue-flame type and made in integral formation with their supply pipes so that each unit may be removed and replaced, the mixers at the free ends of the supply pipes being arranged to telescope with the jets of the gas-valves in the usual mannerfor their easy assemblage and disassemblage. The burners are supported in place in horizontal alinement with their valves, preferably by brackets 60 mounted on the outer faces of the walls 16 and 17 in position to aline the burner units horizontally with the gas-manifold 58, and the pipes 57 of the rear burners 53 are supported on the bottom 20 of the crosschannel in the top of the conduit which is in alinement with the brackets so that all the supply pipes are horizontal and in alinementwith their valves to provide a straight passage for the fuel from the manifold to the burners. In order to allow the rear units, composed of the pipes 57 and their burners, to be easily removed and replaced the lid 26 of the cross-channel is removable; by lifting this lid and the rear plates 55 the rear burners 53 and pipes 57 may be removed and replaced, as is frequently necessary for cleaning purposes. The front burner units are removable after lifting the front plates 55. Eiuitable removable drip trays or pans (S1 and 62 are located in the front and rear burner-boxes, respectively, below the gas-burners, and may be removed for cleaning purposes.

The gas-manifold or supply pipe 58 eX- tends along the frontof the range to supply fuel also to the usual oven-burner (not shown) which in the type of range shown provides heat for the gas-baking oven 63 and the gas-broiling or roasting oven 64: located in the gas-oven structure 38 respectively above and below the gas-manifold at the end of the range opposite the fire-box, the valve 65 for this oven-burner being in front with the valves for the open-top burners, so that the gas-oven burners and cooking-top burners with their valves are at the same level or height to avoid the necessity of the operator stooping down to reach the oven-burner as in a combination oven or of reaching up as in an upper or top oven, or of reaching around to the side of the stove as in the case of a side-control of the burners. The heating elements or units for the compartments 63 and (Sl may be electric heaters if desired.

All parts of the c0alc00l:ing top and or the gas-cooking top, constituting a complete lit cooking-top of standard capacity for each kind of fuel or heat, are organized in the open top above the usual top-ilue; no part need he moved when it is desired to change from one fuel to another, and both forms or" top-cooking units may he used at the same time on the coohingptop. The gas burners oi? the coohing-top are not located in the coal-flue but operate in the open air, and the burners and their supply pipes are protected at all times from the flame and products of the solid-fuel combustion are easily removed 'lorcleaninp; by merely lifting their plates and the lid of the cross channel Without shifting or disturbing any other part. Also, I provide a unitary ho cahinet gas-range including a gas-lashing; Oven, a gas-loroiling oven, standard ca-- pacity gas-cooking top and a complete coalrange having a coal-heated oven and a standard capacity coaLcoolring top, and in which all the gas burners controlled from a gasonanifold at the front of the stove.

This application is a, continuation in part of my co-pending application hled i1 2'"). 1921, and hearing Serial Number 1: 4

I claim:

1. A duplex-fuel range provided with an oven, an open-top, a lire-her: at one side of the open-top, and having; flue-space about the oven including a top-flue opening; at one end into the firebox and having; an upper conduit extending along the central p rtion of the open-top to leave an open space at each of its sides on said top, the firebox and conduit having a plurality of coal-cooking; openings, and top-cooking heaters arranged in the open spaces on the open-top on each side of the conduit.

2. A duplex-fuel range provided with an oven, an open-top, a fire-ho); at one side of the open-top, and having flue-space about the oven including a top-flue iornxec. with an upper conduit having a laterally flaring; intake opening into the fire-box and extending along the central portion of the open-top to leave an open space on each of its sides on the open-top, the fire-ho}; and conduit having); four coal-cookinqopenings, and a gas-cooking top compris a pair of burners arranged in the open spaces on the open-top on each side of the conduit.

3. A duplex-fuel rang e provided with an oven, an open-top and a fire-box at one side of the open-top, top-fiue having an upper conduit opening at one end into the firehon and extending along; the central. portion oi? the open-top, the fire-box and conduit each having two coal-cooking; openings. crosschannel in the top of the conduit between its coal-cooking openings, and a front and rear pair of gas-burners arranged on the open-top on opposite sides of the conduit and having supply pipes, the pipes tor the ieai )uinels scion ieiaoiaoiy c ill .11, cross-channel.

4-. Ii duplex-fuel range provided with an (ipQll-ilO;' a. iii'Q-bOX at one side, a top-flue formed with an upper coi'iduit CIZiOl'iilillfi-Z along the central. portion of the open-top and having its central portion formed with a cross-channei, a top for the fire-hon ant conduit having; coal-coolcinp openings, a 1* inovahle lid for the channel i tl duizi, and a front and rear pair arranged in the open spaces on 0 L sides of toe conduit and having supply pipes, the pipes for the burners lying the channel in the conduit bQlOW its lid. i i duplex-fuel range novided with open-top, a {ire-ho at end of the top l a gas-heated oven at its other end, an 11 below the top and having flue-s ace in eludin a top conduit opening into the fire box and extending along the central portion of the open-top to lea e an open space on each of its sides on said top, the firebox and topidue having; four cosl-coolrii openings.

a gas-cooking top coinpi pair of burners rranfqed 1 the opei space on. the

the conduit. :1.

. 1 11 5511 Li-3U.

open-top on each burner for saic T611. and a nontsupply-pipe for all the burners.

ii cooking ra ge provid I. oven and flue space at one side of the ox having plurality oi? the o oer side or the cl top located above the a conduit extending; lfiflgliddll oi": its contr l portion and opening at its into the firebox and side-"hie and havi plurali oi": cookingcpenings. and an opt. front burner-box on each side of the con duit, gas burners in each h 1;, gas-inaniiioid extending" along; the front of the top.v and supply pipes from the ini'niiiohl to all the burners.

7. A cookingrange provided Wi. 1h an. oven and flue spa at one side of the oven, a fire-hon having;- a plurality oi cooking; openings at the other side of the oven, :1 duplexiuetop located above the oven. con prising a conduit uxtcudinq longitud nally of its cei'itral pi i1 and one i: ends into the tire-ht n ings at the other side of the oven, and a duplex-fuel top located above the oven comprising front and rear open-front burnerboxes and an intermediate conduit opening at its ends into the fire-box and side-flue and having a plurality of cooking-openings and a cross-channel between the cookingopenings, brackets on the conduit in each burner-box, gas burners removably supported by the brackets, a gas-manifold extending along the front of the top, and supply pipesfrom the manifold to the burners, the pipes for the rear burners being supported by the cross-channel in horizontal alinement with the manifold.

9. A duplex-fuel range provided with an oven and flue space at one side of the oven, a firebox at the other side of the oven, a top-plate comprising front and rear shelves above the oven and an upper conduit opening at one end into the fire-box and at its other into the side-flue, the fire-box and conduit having a plurality of coal-cooking openings, and top-cooking heaters in the open spaces above the shelves of the topplate on each side of the conduit.

10. A duplex-fuel range provided with an oven and flue space at one side of the oven, a fire-box at the other side of the oven, a top-plate comprising front and rear shelves above the oven and an upper conduit opening at its ends into the fire-box and side-flue, the fire-box and conduit having four coalcooking openings, baffle-plates at the ends of the shelves, and a pair of gas burners arranged in the open space above each shelf on each side of the conduit.

11. A duplex-fuel range provided with an oven and flue space at one side of the oven, a firebox at the other side of the oven having coal-cooking openings, a top-plate comprising front and rear shelves spaced apart above the oven and upright walls on the inner edges of the shelves terminating at one end at the fire-box and at the other end at the side-flue, plates supported on the walls and having coal-cooking openings, a crosschannel in the top of the walls between the coal-cooking plates, a front and rear pair of gas-burners removably supported on the topplate and having supply pipes, the pipes for the rear burners being removably seated in the cross-channel, and a gas-manifold on the front of the range.

12. A duplex-fuel range provided with an oven and flue space at one side of the oven, a fire-box at the other side of the oven, a

' top-plate comprising front and rear shelves spaced apart above the oven and an intermediate upper conduit having fro-nt and rear walls and opening at one end into the fire-box and at its other end into the sideline, the lire-box and conduit each having two coal-cooking plates, bafiles at the ends of the shelves flush with the top of the conduit, means to close the passages from the fire-box to the spaces between the oven and shelves, a front and rear pair of gas-burners removably supported on the top-plate and having supply pipes, and a gas-manifold on the front of the range.

18. A duplex-fuel range provided with an oven, a fire-box at one-side of the oven, and having a fine comprising upper and lower flue space above the oven, means to close the lower flue space from the fire-box, the upper flue space opening at one end into the fire-box, and a clean-out piece on the oven having an inclined face extending from the oven-top into the opening into the firebox.

14:. A duplex-fuel range provided with an oven, a fire-box at one side of the oven, a top-plate comprising front and rear shelves spaced above the oven and an intermediate upper conduit opening at one end into the lire-box, a closure for the spaces under the shelves having a lip extending into the con duit, and a clean-out piece on the oven hav ing an inclined face extending from the oven-top to the lip.

15. A duplex-fuel range provided with a coal-heated oven, a fire-box at one end of the oven and a gas-heated oven at its other end, and having flue-space including an upper conduit opening into the fire-box and extending along the central portion of the coal-oven, an open-front burner-box on each side of the conduit, the fire-box and conduit having four coal-cooking openings, a pair of gas burners arranged in each burner-box below the top of the conduit, a gas burner for said gas-heated oven, and a front supply-pipe for the gas burners at the level of the front burner-box.

16. A duplex-fuel range provided with a coal-heated oven and flue-space at one side of said oven, a fire-box at the other side of said oven, a top-plate comprising front and rear shelves spaced apart above said oven and an upper conduit having upright walls terminating at their front ends at the firebox and at their rear ends above the side- .iiue, a plate closing the top of the side-flue and the rear of the conduit, the closure plate and rear ends of the walls being shouldered, a gas-heated oven on the closureplate, gas-burners on the top-plate on each side of the conduit and in the gas-heated oven, and a front gas-manifold for th burners.

In testimony whereof I afiix my signature.

JOHN J. TOO'MEY. 

